wailsapp Wails Origin Validator originValidator.go wildcardPatternToRegex permissive regular expression

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k2.55+

Summaryinfo

A vulnerability has been found in wailsapp Wails and classified as critical. Affected by this issue is the function wildcardPatternToRegex of the file v2/internal/frontend/originvalidator/originValidator.go of the component Origin Validator. Performing a manipulation results in permissive regular expression. This vulnerability is known as CVE-2026-34157. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, was found in wailsapp Wails (the affected version unknown). This affects the function wildcardPatternToRegex of the file v2/internal/frontend/originvalidator/originValidator.go of the component Origin Validator. The manipulation with an unknown input leads to a permissive regular expression vulnerability. CWE is classifying the issue as CWE-625. The product uses a regular expression that does not sufficiently restrict the set of allowed values. This is going to have an impact on confidentiality, integrity, and availability.

This vulnerability is uniquely identified as CVE-2026-34157. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 5074 is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permissive regular expression
CWE: CWE-625 / CWE-185 / CWE-697
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 5074

Timelineinfo

10/27/2026 Advisory disclosed
10/27/2026 +0 days VulDB entry created
10/27/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-34157 (🔒)
GCVE (CVE): GCVE-0-2026-34157
GCVE (VulDB): GCVE-100-427395
scip Labs: https://www.scip.ch/en/?labs.20150716

Entryinfo

Created: 10/27/2026 16:11
Changes: 10/27/2026 16:11 (51)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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